In:
Green Chemistry, Royal Society of Chemistry (RSC), Vol. 23, No. 22 ( 2021), p. 8871-8877
Abstract:
CsPbX 3 (X = Cl, Br, and I), as a potential luminescent material with excellent optical characteristics, has attracted researchers for several years but it is difficult to use it commercially due to its low stability. Herein, a simple green process was successfully optimized without using any solvents for synthesizing an ultra-stable CsPbBr 3 @SiO 2 composite. The phase transformation process in obtaining the CsPbBr 3 @SiO 2 composite was resolved according to in situ X-ray diffraction measurements. Based on the results, the best sintering condition for the CsPbBr 3 @SiO 2 composite was obtained, realizing the highest photoluminescence quantum yield of 15.5%. The obtained CsPbBr 3 @SiO 2 exhibited a narrowband green emission and achieved ultra-high stability with an intensity of 100% being maintained after the 196 h test under double-85 conditions. Moreover, it maintained the emission intensity and color coordinate during the 1000 h irradiation test in the light-emitting diode package. This excellent performance revealed the great potential of the CsPbBr 3 @SiO 2 composite for commercialization in backlight applications.
Type of Medium:
Online Resource
ISSN:
1463-9262
,
1463-9270
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2021
detail.hit.zdb_id:
1485110-6
detail.hit.zdb_id:
2006274-6
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